Insulated wire terminal



April 5, 1949. M F. MATTHYssE v 2,466,607

IFNSULATED WIRE: TERMINAL Filed Sept. 8, 1944 llllllll Patented Apr. 5,1949 ori-'ICE `1 INSULATED WIRE TERMINAL Irving Frederick Matthysse, NewYork, N. Y., as-

signor to Burndy Engineering Company, Inc., a corporation of New YorkApplication September 8, 1944, Serial No. 553,234

My invention relates to wire terminals and more particularly to aterminal ,designed to accommodate an insulated wire.

The primary object of my invention is to provide a terminal for aninsulated-'wire wherein the bared end of the wire is doubled upon itselfand the terminal is secured bothto the insulation and the baredportionsjlof Vthezwire, thus obtaining increased pull-out values.

Other objects are to provide a terminal connection for a wire in whichwire breakage adjacent the point of gripping is reduced to a minimum; toprovide a connection for an insulated wire wherein a Iportion of thetensile forces that may be applied will be carried by the insulation atthe point of connection; to provide a terminal connection that isdesigned to produce a snub action for resisting tensile forces appliedto the conductors; to provide a terminal connection for an insulatedwire that is shorter than the combined length of contact of wire andinsulation; to provide a connection that causes a uniform pressure to beapplied to the conductor contacting surfaces; to provide a connectorwherein uninsulated wire may be secured, when necessary; to provide allthe foregoing objects in a connector which may be made of sheet metal,and in one piece, solderless, and preferably secured by a crimping tool.

I accomplish these and other objects and obtain my new results as willbe apparent from the device described in the following specification,particularly pointed out in the claims, and illustrated intheaccompanying drawing in which:

Fig. 1 is a side view of my connector beforeV attaching a conductorthereto.

Fig, 2 is an end view thereof.

Fig. 3 is a top view of the same.

Fig. e is a side view with conductor secured therein.

Fig. 5 is a transverse section through 5 5 of Fig. 4, with crimpingpliers in position.-

Fig. 6 is a flat development of my connector.

Fig. 7 is a perspective view of my connector with an apertured plateused as a separator.

Referring more in detail to the drawing, reference numeral I0 designatesmy terminal, provided at one end thereof with a terminal lug section vIIhaving a circular aperture I2. Two wing sections I3 and It extendlaterally from the remaining end of the terminal, with a third sectionI5 extending longitudinally from the rear f s claims. gol. 17a- 269) nonls 1s bent and the free end positioned between the two wings of thechannel to form a separator. The ends of the wings may be Vshaped, as atI6 and II to .interlock when the -U-shaped channel is compressed to theconductor 20.' Such a conductor is illustrated in Fig. 4, provided withinsulation 2|, and bared end 22.-

In assembling the conductor to the connector, the bared end-22 of thewire is bent to form a U, and with the insulated portion 2| positionedabove the separator I5, 'and the bared end-22 positioned underneath theseparator. Thereafter, the ends I6 and I1 of the connector body arerounded and compressed, preferably by means of a tool 3B, shown in Fig.5, wherein the'jaws 3| and 32 are provided with transverse grooves 33and 34 into which the connector body is placed. The wire and a portionvof the insulation is compressed suiiiciently to form a permanentconnection.

The wire-end 22, being in direct contact with the connector body Ill,establishes the electrical connection. The contact is maintained underpressure of the compressed joint with the compressed insulation.insuring a uniform pressure taking up any relaxation that may occur inthe connection. Any direct tension on the conductor 20 is resisted bythe insulation which is directly secured Vby the compressed connectorbody. The separator is of the floating type, that is. it is capable ofmovement independently of the side walls of the body and ofaccommodating itself to variations in conductor diameters withoutdistortion of the side walls. The pressure is constantlycommunicatedfrom one conductor section to the other, and a constantpressure between the conductors is therefore maintained. 4

The resulting advantages of such a 'terminal connection are: themechanically gripped wire is strengthened by the mechanically grippedinsulation, thus avoiding breakage of the wire; repeated flexing of theinsulated wire leading to the connection does not affect the wire at thegripped portion; the overall length of the connector is less than astraight line type of connection, thus the smaller connector is moresuitable for in- Vstallation in close quarters, and less likely to arateslots 2l and 2l for insertion of theftwo` legs 21 and 2l oi' theU-shaped section and function exactly as does the separator in the onepiece connector, as is shown in Fig. 7. Moreover the terminal can beused to gri-p an uninsulated wire in the same-manner although thecushioning ei'i'ect of the rubber insulation will not be present.

I have thus described my invention, but I desire it understood that itis not coniinedto the particular forms or uses shown and described, thesame being merely illustrative, and that the invention may be carriedout in otherk ways without departing from the spirit of my invention,and, therefore, I claim broadly thev right to employ all equivalentinstrumentalities coming within the scope of the'appended claims, and bymeans of which, objects of my invention are attained and new resultsaccomplished, as it is obvious that the particular embodiments hereinshown and described are only some of the many that can be employed toattain these objects and accomplish these results.

I claim:

1. A connector for connecting an insulated electrical conductor havingan exposed end to a supporting ilxture, said connector having anelectrically conducting tongue section extending therefrom forsupporting the connector and transmitting electrical currenttherethrough, to the supporting fixture; comprising a body sectionhaving a plurality of side wall portions, and a separator positionedbetween the side walls and having a length not materially leas thanthewidth of the side walls and movable independently thereof, so as toprovide a plurality of longitudinally extending compartments, one o!said compartments having an entrance opening for insertion of theinsulated conductor therein, the side walls having a length suilicientto form a gripping closure for the inserted insulated conductor in saidone compartment, another of said compartments having an entrance openingfor insertion of the bared end of the conductor therein. said separatorhaving a free edge extending transversely from one side wall to anotheron the side ot the separator opposite the entrance opening for theinsulated conductor, and around which the bared end ot the conductor isbent.

2. The connector of claim 1 wherein the body section has a bottomportion and the separator is integrally connected to the bottom portionon the same side of the connector as is the entrance opening for 'theinsulated conductor.

3. I'he connector of claim l, wherein the separator comprises a platesection having a plurality of openings for the side wall portions.

IRVING FREDERICK MATTHYSBE.

REFERENCES CITED The following references are of record in the ille ofthis patent:

UNITED STATES PATENTS Number Name Date 802,994 Kliegl Oct. 31, 19051,987,127 Rice Jan. 8, 1935 2,157,007 Oilner May 2, 1939 2,347,713Rogoi! May 2, 1944 FOREIGN PATENTS Number Country Date f 531,246 FranceOct. 20, 1921

